Nut-lock



G. SURBER.

, NUT LOCK.

TlON FILED APP APR. 2, I919- 1,359,287. Patented Nov. 16,1920.

ii i wl llll' WITNESSES g\ f /6 INVENTOR /4' ATTORNEYS UNITED STATES.

PATENT OFFICB CHAR/LIES G-. SURBER, OF RICHMOND, VIRGINIA.

Nora-icon.

Specification of-Iiettersl'atcnt. Patented N V, 16, 192() Application filed April 2, 1919. Serial 110,286,890.

To all whom it may concern:

Be 1t known that I, UHAnLns G. SURBER,

a citizen of the United States, and a resident Y r-R' i' 1" 11 1' 01 1c. mono, in too county i enLlCO anc State of Virginia, rave invented certain new and useful Improvements in Nut- Loclrs, of which the tollowingis specification.

My present invention relates generally to trates my present invention and forms .a

part of this specification,

Figure 1 1s a sectional view illustratlng the practical application of my inventlon,

Fig. 2 is a side view of a bolt, the nutproposed by my invention being in section thereon. and

Fig. 8 is a transverse section taken substantially on line of Fig. 2.

Referring now to these figures, my invention proposes a nut such as indicated at 10 in the several figures, and which is as usual provided with a central main bore, threaded to screw upon the threaded end of a bolt 11. My invention further proposes the provision of second bore indicated at 11,, and as seen in Figs. 2 and 3, in the nut 10, at right angles to the main bore and partially intersecting the same as particularly seen in 3, so as to receive in a portion thereof. a certain small portion of the threaded periphery of the bolt when the nut is screwed on the bolt.

in the bore 12 is disposed a locking .pin 13, whose inner end is engaged by a spring 1%, positioned as resently described, and whose outer end projects slightly beyond one side wrench-engaging face of the nut 10 for manual manipulation. Intermediate its ends, the pin 18 has a concaved recess opposite the main threaded bore of the nut 10, the pin 13 having portions extending upon relativ ly oppositeisides of the main bore thereof, as plainly seen.

Te wall of the recess 15 is furthermore provided at one side withftransversely extending notches, forming a series of thread gripping teeth 16, which upon lengthwise shifting movement otthe pin 13under tension of the spring 14, efi'ectivelyengage and lock with the threads of the bolt, 11 when the nut is screwed-thereon; i

Opposite to its concaved recess'1j5, the pin has alengthWise'reces's at 17 which receives the inner end of a screw 18 threaded through a portion of the nut at right angles to the pin 13, so that the lengthwise shifting movements of the pin 13 are thus limited and its complete withdrawal and accidental displacement is prevented under normal cir-- cumstances.

By reference to Figs. 2 and 3 it will be noted that the bore 12 terminates at one end in slightly spaced relation to one side wrench-engaging face of the nut through which it communicates by a smaller opening 19, thus providing for a bearing holder at the inner end of the bore 12 against which one end of the spring 14 has bearing, as well as for the introduction of an implement against the inner end of the pin to drive the latter into tight locking engagement with the bolt threads.

Thus. in use, after the pin 13 has been pressed inwardly to free the teeth 16 from the bolt threads, it is apparent that the nut tighter grip of the teeth of the locking pin with the bolt threads.

For convenience, the outer end 20 of the pin 18 may be oppositely beveled as seen particularly in Fig. 3, so that when a wrench is applied to. the side faces of the nut, particularly that side beyond which the exposed end of the pin 13 projects, the'pin will be engaged by the wrench and automatically shift it inwardly so as to move the teeth 16 free of the bolt threads.

It is thus obvious that my invention provides a device which in view of the simple provision of a pin shittable into the second bore of the nut, may be readily manufactured, and just as readily assembled, and it is obvious that in view of the fact that the locking pin 13 is in a single piece through tion which will be effective and out, it presents a durable, lasting construceflicient throughout its life.

A look nut having a threaded bolt-receiving bore, and a bore at right angles to and e partially intersecting said threaded bore and terminatlng at its inner end in spaced relation to one face of the nut, said nut having a reduced opening therethrough at the inner endofthe bore, a locking pin having a limited sliding movement lengthwise ,in said second bore and the inner end of which-is exposed through said opening, said pin having portions extending upon relatively 0p' posite sides of the threaded bore, one of which portions projects exteriorly of the nut, said pin having a recessed portion op posite the threaded bore and having its wall atone side of and Within the recess notched to provide bolt-engaging teeth extending transversely with respect to the longitudinal 7 axis of the pin, and a spring within the said second bore of the nut and engaging the pin to normally shift the latter in one direction, said pin having a groove, and a screw threaded through and countersunk within a portion 01 the nut at right angles to the pin and to the bolt receiving boreand projecting into the groove to limit movement of the 

